Home / 643,359.47-887,942.48-356,971.82

Finding the Fourth Proportional to 643,359.47, 887,942.48 and 356,971.82

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Solution

The fourth proportional to 643,359.47, 887,942.48 and 356,971.82 is: 492,680.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,359.47 : 887,942.48 = 356,971.82 : x
  2. Step 2: Convert to fraction form
    643,359.47/887,942.48 = 356,971.82/x
  3. Step 3: Cross multiply
    643,359.47x = 887,942.48 × 356,971.82
  4. Step 4: Simplify right side
    643,359.47x = 316,970,436,916.34
  5. Step 5: Solve for x
    x = 316,970,436,916.34/643,359.47
  6. Step 6: Final answer
    x = 492,680.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.